1 files changed, 5 insertions, 3 deletions
diff --git a/components/script/dom/workerglobalscope.rs b/components/script/dom/workerglobalscope.rs
index 95e9bb13106..bb9a9c3f4ab 100644
--- a/components/script/dom/workerglobalscope.rs
+++ b/components/script/dom/workerglobalscope.rs
@@ -397,12 +397,14 @@ impl WorkerGlobalScope {
     }
 
     pub fn script_chan(&self) -> Box<ScriptChan + Send> {
-        let dedicated =
-            self.downcast::<DedicatedWorkerGlobalScope>();
+        let dedicated = self.downcast::<DedicatedWorkerGlobalScope>();
+        let service_worker = self.downcast::<ServiceWorkerGlobalScope>();
         if let Some(dedicated) = dedicated {
             return dedicated.script_chan();
+        } else if let Some(service_worker) = service_worker {
+            return service_worker.script_chan();
         } else {
-            panic!("need to implement a sender for SharedWorker/ServiceWorker")
+            panic!("need to implement a sender for SharedWorker")
         }
     }